an c'est a n
an être a n
test v:exist n:let n:let
an c'est a n .
ɑ̃ WORD_BOUNDARY s ɛ t WORD_BOUNDARY a WORD_BOUNDARY  ɛ n WORD_BOUNDARY
a n WORD_BOUNDARY c ' e s t WORD_BOUNDARY a WORD_BOUNDARY n WORD_BOUNDARY